Discussion
Which of the following statements are TRUE for the transposable elements?
P. Barbara McClintock discovered the autonomous and non-autonomous transposable elements in Maize
Q. Variations in flower pigmentation in Antirhinum are due to the presence of transposable elements Ac and Ds
R. The Ac transposable element is 4563 bp long and has an 11 bp inverted repeats
S. Ds produces the transposase and mobilize the Ac elements
Answer: C
The true statements are P, R.
P is true: Barbara McClintock discovered transposable elements in maize, including the autonomous Activator (Ac) and the non-autonomous Dissociation (Ds). R is true: Ac is 4563 bp long and ends in 11 bp terminal inverted repeats.
Q is false: flower colour variegation in Antirrhinum (snapdragon) is caused by its own transposons, the Tam elements, not by the maize Ac and Ds. S is false the other way round: Ac encodes the transposase and mobilises Ds, which cannot move by itself.
Post your comment
Please log in or register to post a comment.
Examination Categories
- SSC Exams
- Banking Exams
- Teaching Exams
- Civil Services Exams
- Railways Exams
- Engineering Recruitment Exams
- Defence Exams
- State Government Exams
- Police Exams
- Insurance Exams
- Nursing Exams
- Other Government Exams
- NRA CET
- PG Entrance Exams
- Campus Placement
- MBA Entrance Exams
- CUET and UG Entrance
- Judiciary Exams
- Regulatory Body Exams
- Software Development